MAX5621 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 16-Bit DACs with 16-Channel

19-2715; Rev 1; 2/05
16-Bit DACs with 16-Channel
Sample-and-Hold Outputs
General Description
The MAX5621/MAX5622/MAX5623 are 16-bit digital-to-
analog converters (DACs) with 16 sample-and-hold
(SHA) outputs for applications where a high number of
programmable voltages are required. These devices
include a clock oscillator and a sequencer that updates
the DAC with codes from an internal SRAM. No external
components are required to set offset and gain.
The MAX5621/MAX5622/MAX5623 feature a -4.5V to
+9.2V output voltage range. Other features include a
200µV/step resolution, with output linearity error, typi-
cally 0.005% of full-scale range (FSR). The 100kHz
refresh rate updates each SHA every 320µs, resulting
in negligible output droop. Remote ground sensing
allows the outputs to be referenced to the local ground
of a separate device.
These devices are controlled through a 20MHz
SPI™/QSPI™/MICROWIRE™-compatible 3-wire serial
interface. Immediate update mode allows any channel’s
output to be updated within 20µs. Burst mode allows
multiple values to be loaded into memory in a single,
high-speed data burst. All channels are updated within
330µs after data has been loaded.
Each device features an output clamp and output resis-
tors for filtering. The MAX5621 features a 50Ω output
impedance and is capable of driving up to 250pF of out-
put capacitance. The MAX5622 features a 500Ω output
impedance and is capable of driving up to 10nF of output
capacitance. The MAX5623 features a 1kΩ output imped-
ance and is capable of driving up to 10nF of output
capacitance.
The MAX5621/MAX5622/MAX5623 are available in 64-pin
TQFP (10mm x 10mm) and 68-pin thin QFN (10mm x
10mm) packages.
________________________Applications
MEMS Mirror Servo Control
Industrial Process Control
Automatic Test Equipment
Instrumentation
Features
♦ Integrated 16-Bit DAC and 16-Channel SHA with
SRAM and Sequencer
♦ 16 Voltage Outputs
♦ 0.005% Output Linearity
♦ 200µV Output Resolution
♦ Flexible Output Voltage Range
♦ Remote Ground Sensing
♦ Fast Sequential Loading: 1.3µs per Register
♦ Burst and Immediate Mode Addressing
♦ No External Components Required for Setting
Gain and Offset
♦ Integrated Output Clamp Diodes
♦ Three Output Impedance Options
MAX5621 (50Ω), MAX5622 (500Ω), and
MAX5623 (1kΩ)
Ordering Information
PART
MAX5621UCB
MAX5621UTK
MAX5622UCB
MAX5622UTK
MAX5623UCB
TEMP RANGE*
0^oC to +85^oC
0^oC to +85^oC
0^oC to +85^oC
0^oC to +85^oC
0^oC to +85^oC
PIN-PACKAGE
64 TQFP
68 Thin QFN-EP**
64 TQFP
68 Thin QFN-EP**
64 TQFP
MAX5623UTK
0^oC to +85^oC
68 Thin QFN-EP**
*For other temperature ranges, contact factory.
**EP = Exposed pad.
Pin Configurations
TOP VIEW
N.C. 1
N.C. 2
GS 3
VLDAC 4
RST 5
CS 6
DIN 7
SCLK 8
VLOGIC 9
IMMED 10
ECLK 11
CLKSEL 12
DGND 13
VLSHA 14
AGND 15
VSS 16
N.C. 17
MAX5621
MAX5622
MAX5623
51 N.C.
50 V_DD
49 CH
48 V_SS
47 OUT10
46 N.C.
45 OUT9
44 N.C.
43 OUT8
42 AGND
41 V_DD
40 N.C.
39 OUT7
38 N.C.
37 OUT6
36 N.C.
35 CL
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
THIN QFN
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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